H2 + Cl2 --to> 2HCl
CaCO3 ---to> CaO + CO2
Fe + 2HCL --to-> FeCl2+H2
2AL (OH)3 ---to-->AL2O3 + 3H2O
K2O + H2O ---> 2KOH
H2 + Cl2 -> (ánh sáng) 2HCl
CaCO3 -> (t°) CaO + CO2
Fe + 2HCl -> FeCl2 + H2
2Al(OH)3 -> (t°) Al2O3 + 3H2O
K2O + H2O -> 2KOH
\(H_2+Cl_2\rightarrow2HCl\)
\(CaCO_3\rightarrow CaO+CO_2\)
\(Fe+HCl\rightarrow FeCl+\dfrac{1}{2}H_2\)
\(2Al\left(OH\right)_3\rightarrow Al_2O_3+3H_2O\)
\(K_2O+H_2O\rightarrow2KOH\)